EP2118946A1 - Pile électrochimique comprenant un bloc d'électrodes et un élément de connexion destiné à une sortie d'air d'évacuation - Google Patents

Pile électrochimique comprenant un bloc d'électrodes et un élément de connexion destiné à une sortie d'air d'évacuation

Info

Publication number
EP2118946A1
EP2118946A1 EP07857460A EP07857460A EP2118946A1 EP 2118946 A1 EP2118946 A1 EP 2118946A1 EP 07857460 A EP07857460 A EP 07857460A EP 07857460 A EP07857460 A EP 07857460A EP 2118946 A1 EP2118946 A1 EP 2118946A1
Authority
EP
European Patent Office
Prior art keywords
cell
connection element
connecting element
electrochemical cell
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07857460A
Other languages
German (de)
English (en)
Inventor
Jochen Fassnacht
Richard Aumayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2118946A1 publication Critical patent/EP2118946A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H01M50/557—Plate-shaped terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to an electrochemical cell and a system of at least one electrochemical cell and a housing according to the preambles of the independent claims.
  • Nickel metal hydride reservoirs e.g. are summarized in a plurality of modules, each with a plurality of individual cells as a storage unit or as a powerful alternative lithium-ion batteries.
  • laminated cells are known as cost-effective and efficient alternative, also called “coffeebag” cells, which, because of their large surface area, enable a particularly effective release of reaction heat.
  • EP 1 577 973 A1 describes such "Coffeebag” cells as rectangular, very flat cells
  • the electrode packs are arranged in a laminated metal foil that adapts to the electrode pack, and the cells are accordingly soft in several Modules combined and electrically parallel and / or connected in series.
  • predetermined breaking points are provided in the outer skin.
  • the invention is based on an electrochemical cell, in particular a laminated electrochemical cell, with an electrode pack and an outer skin enclosing the electrode pack.
  • connection element is provided for an exhaust air discharge.
  • an orderly discharge of exiting substances from laminated cells can take place, for example when a safety valve of the cell responds.
  • the escaping medium can be specifically directed in an area where people are not as endangered as possible. Penetration of gases, mists and / or liquids into a passenger compartment (when used in particular in hybrid vehicles or electric vehicles) can be prevented, as well as an uncontrolled escape to the outside.
  • the exiting medium can be collected in a separate collection container, which can also be filled with a suitable absorber.
  • connection element can be integrated into the outer skin and be laminated directly during the production of the cell in a sealing process for closing the cell.
  • This connection element can e.g. be designed as exhaust tubes and optionally contain a safety valve.
  • connection element has a receiving element for the captive attachment of a hose or tube.
  • connection element may have a Schlaucholive, over which a tube is pushed.
  • a locking element may be provided which prevents slipping of the hose.
  • the invention is according to another aspect of a system of at least one electrochemical cell and a housing, wherein the cell has an electrode pack and an outer skin surrounding the electrode pack.
  • connection element is provided for an exhaust air discharge.
  • the connection element can, as described above, be arranged on the cell itself and / or also on the housing.
  • connection element can be connected to a safety valve integrated in the outer skin. This can ensure that when a response of the safety valve escaping media collected by the connection element and can be specifically derived in designated areas.
  • connection element can preferably be arranged sealingly above the safety valve, wherein the safety valve can empty into a gas space within the connection element.
  • connection element can be plugged onto the outer skin of the cell via the safety valve.
  • connection element can be integrated in the housing. Then, the connection element should fit as close as possible to the cell surface during assembly.
  • the cells can be summarized as a stack. Depending on the desired voltage or electrical power, one or more such stacks may be combined in a battery pack. An installation position of one or more stacks may be arbitrary in a corresponding battery pack per se, ie, vertical, horizontal, transverse or the like. The person skilled in the art will select the appropriate installation position for the given boundary conditions. Brief description of the drawings
  • Fig. 1a, b is a side view of a preferred laminated cell with integrated
  • FIG. 1 b is a side view of a preferred housing for a preferred
  • FIG. 2a Cell of Fig. 1 (Fig. 2a) and a plan view of the preferred housing (Fig. 2b);
  • Fig. 3 in a side view a detailed view of a preferred
  • FIG. 4 is a side view of a preferred housing with a preferred one
  • FIG. 1 a) and in plan view (FIG. 1 b) show a first preferred exemplary embodiment with reference to a laminated electrochemical cell 10 with an electrode pack 12 and an outer skin 16 enclosing the electrode pack 12 10 is rectangular and flat and has a longitudinal extent 26. At exit points 20a and 22a of the cell 10, current conductors 20 and 22 emerge laterally along the longitudinal extent 26 from the outer skin 16.
  • a cell edge 24 is circumferentially sealed, in particular welded, and interrupted at a location with a connection element 30, the closing of the
  • connection element 30 is designed as an exhaust tube and has, as indicated in the drawing, on a nozzle 32, a locking lug or a Schlaucholive on to attach a hose captive can.
  • the hose not shown, leads out of the cell 10 leaking media in a designated area.
  • FIGS. 2 a and 2 b show an exemplary embodiment of a preferred system in which an electrochemical cell 10 is arranged in a housing 50 which consists of two housing parts 52 and 54.
  • the cell 10 is received in a receptacle 40 and can be clamped at the edge between the housing parts 52, 54.
  • the edge of the cell 10 can be pressed by a bead 58 into a groove 56.
  • the housing 50 has in edge 66 and 68 of its housing parts 52 and 54 ventilation slots 62 and 64 in order to cool the cell 10 can.
  • a connection element 30 is here integrated in the housing 50 and comprises a gas space 34, which is arranged sealingly on the cell 10, preferably in a region of a possible, not shown, predetermined breaking point or a safety valve of the cell 10.
  • the connection element 30 is on the one housing part 54 fixed, while on the other housing part 52, a suitable recess 42 is provided.
  • a hose or a pipe can be attached to a nozzle 32 captive.
  • FIGS. 3 a, 3 b and 3 c show detail views of a further preferred connection element 30, which can be plugged onto a laminated cell 10.
  • the connection element 30 is preferably inserted over an existing predetermined breaking point 14 of the cell 10.
  • a connecting piece 32 of the connecting element 30, to which a hose 40 can be attached merges into a pair of clips with two clamping surfaces 38, between which the cell 10 is arranged (FIG. 3c).
  • Fig. 4 shows an embodiment of the embodiment in Fig. 3, in which the cell 10 is arranged in a housing 50 designed as a frame.
  • the housing 50 has a recess 70, which is adapted to the connection element 30 and leaves free the clamping surfaces 38 thereof.
  • the cells 10 described in the various exemplary embodiments with and without housing 50 can also be combined to form modules with a plurality of cells 10.
  • the connection elements 30 of each cell 10 can then be connected to a common derivative of the module particularly advantageous.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

La présente invention concerne une pile électrochimique comprenant un bloc d'électrodes (12) et une enveloppe extérieure (16) qui entoure le bloc d'électrodes (12), en particulier une pile électrochimique laminée. Selon l'invention, un élément de connexion (30) est utilisé pour une sortie d'air d'évacuation (40).
EP07857460A 2007-01-30 2007-12-12 Pile électrochimique comprenant un bloc d'électrodes et un élément de connexion destiné à une sortie d'air d'évacuation Withdrawn EP2118946A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007004568A DE102007004568A1 (de) 2007-01-30 2007-01-30 Elektrochemische Zelle und System aus wenigstens einer elektrochemischen Zelle und einem Gehäuse
PCT/EP2007/063797 WO2008092531A1 (fr) 2007-01-30 2007-12-12 Pile électrochimique comprenant un bloc d'électrodes et un élément de connexion destiné à une sortie d'air d'évacuation

Publications (1)

Publication Number Publication Date
EP2118946A1 true EP2118946A1 (fr) 2009-11-18

Family

ID=39183093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07857460A Withdrawn EP2118946A1 (fr) 2007-01-30 2007-12-12 Pile électrochimique comprenant un bloc d'électrodes et un élément de connexion destiné à une sortie d'air d'évacuation

Country Status (4)

Country Link
US (1) US20090274950A1 (fr)
EP (1) EP2118946A1 (fr)
DE (1) DE102007004568A1 (fr)
WO (1) WO2008092531A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010055599A1 (de) 2010-12-22 2012-06-28 Daimler Ag Batterie mit einem Stapel aus mehreren prismatischen Batterieeinzelzellen
DE102012020011A1 (de) 2012-10-12 2014-04-17 Volkswagen Aktiengesellschaft Vorrichtung zum Entgasen einer elektrochemischen Zelle
FR3116657A1 (fr) * 2020-11-23 2022-05-27 Commissariat A L'energie Atomique Et Aux Energies Alternatives Accumulateur métal-ion muni d’un conduit de dégazage, Module de batterie ou Pack-batterie associé à refroidissement liquide.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040017094A (ko) * 2002-08-20 2004-02-26 삼성에스디아이 주식회사 안전변을 구비한 파우치형 이차전지
JP2004178909A (ja) * 2002-11-26 2004-06-24 Matsushita Electric Ind Co Ltd 密閉式二次電池
JP2005267886A (ja) 2004-03-16 2005-09-29 Nissan Motor Co Ltd 二次電池
JP4810797B2 (ja) * 2004-05-06 2011-11-09 トヨタ自動車株式会社 電池モジュールと組電池

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008092531A1 *

Also Published As

Publication number Publication date
DE102007004568A1 (de) 2008-07-31
WO2008092531A1 (fr) 2008-08-07
US20090274950A1 (en) 2009-11-05

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